We’ve researched and ranked the best California HTML5 mobile app development agencies that build sophisticated and high-quality apps that help brands drive more loyal customers and sales. Compare listings by past work, reviews, cost and size to pick the best fit for you.

Best HTML5 Mobile App Development Agencies in California

10 Companies - Rankings updated: September 04, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

HTML5
Retail
$10,000 - $25,000
Sort by: Sponsored
United States × California × HTML5 Mobile App Development × Retail × $10,000 - $25,000 × Clear Filters

  • HDWEBSOFT

    Bring your vision to life

    HDWEBSOFT is a leading software outsourcing company in Vietnam, known for its high-quality services, affordable pricing, and reliable team. With over 250 experienced engineers and a decade of expertise, HDWEBSOFT has helped businesses of all sizes from around the world to develop and launch successful...

    Top Services:

    • Web Development
    • eCommerce Development
    • IoT
    • Mobile App Development
    • Software Development
    • Show more
    Location
    Pasadena, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed

    HDWEBSOFT Services

    • Web Development
    • eCommerce Development
    • IoT
    • Mobile App Development
    • Software Development
    • Big Data Analytics
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • vTech
    • Toku
    • Logi
    • TripScout
    • PushPress
    • Trustify
    • SkyLab
    • Speek
    • Instantly
    • ANX
    Data sourced from the agency's DesignRush profile

    HDWEBSOFT Reviews & Testimonials

    • Jason Harvison
      Jason Harvison CEO at Elevate
      5.0 ★

      Web Development Review from Jason Harvison

      HDWEBSOFT did a fantastic work that aided the client in expanding their business, particularly in terms of growing website subscriptions. The project began on schedule and opened up a lot of opportunities for the business.

    • David Zalik
      David Zalik CEO at Greensky
      5.0 ★

      Web Development Review from David Zalik

      Using a smooth user interface, HDWEBSOFT effectively updated our landing page, enticing visitors to sign up for the product's waitlist. The staff provided a customized strategy and was incredibly responsive, driven, and enthusiastic. They also used ClickUp for project administration.

    • Max Levchin
      Max Levchin Co-Founder & CEO at Affirm
      5.0 ★

      Mobile App Development Review from Max Levchin

      We've partnered with HDWEBSOFT who have created our app using .NET. The feedback from our customers we've received has been overwhelmingly good. We had heard positive things about the idea even before we released the app, so it's encouraging to see those comments continue once it has been out. HDWEBSOFT was set up from the start. The design team was outstanding; they completed the job on schedule and within our allocated budget. They followed a well-defined procedure that was in place.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (31)
    4.7 4.7 (36)

  • Grazitti Interactive

    Marketing For Digital Natives

    Grazitti Interactive, a global leader in digital innovation, offering AI-driven solutions to drive customer success. We specialize in Salesforce, marketing automation, analytics, and more, partnering with industry giants to deliver results-oriented solutions for clients...

    Top Services:

    • Graphic Design
    • Video Production
    • Web Design
    • Web Development
    • Digital Marketing
    • Show more
    Location
    Mountain View, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    11 Projects Listed

    Grazitti Interactive Services

    • Graphic Design
    • Video Production
    • Web Design
    • Web Development
    • Digital Marketing
    • SEO
    • Mobile App Development
    • eCommerce Development
    • eCommerce
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Awid
    • Biogen MA, Inc
    • Bulamu Healthcare International
    • Calypso
    • CBR Systems Inc (AMAG Pharmaceuticals)
    • Connexity UK Limited
    • Convert Digital
    • Devex
    • Didax Inc,
    • Evoke Group LLC
    Data sourced from the agency's DesignRush profile

    Grazitti Interactive Reviews & Testimonials

    • Rida Khan
      Rida Khan Owner at Undisclosed
      5.0 ★

      Email Marketing Review from Rida Khan

      This is the second company I've worked with Grazitti at and both experiences have been positive. Their team is able to turn around our requests very quickly and has provided good best practices from their work with other clients. I'd recommend them for the Marketing services.

    • Patricia Lughezzani
      Patricia Lughezzani Group Vice President of Customer Support & Advocacy at Marketo
      5.0 ★

      Web Design Review from Patricia Lughezzani

      Grazitti and Marketo Support have successfully partnered to roll out rich functionality and support Portal. Beyond core development skills to implement business functionally in SFDC Service Cloud and Customer Community, the Grazitti team has been a valued contributor to recommend technology such as Solr text search, workflow optimizations, and web creative design.

    • David Skyberg
      David Skyberg Product Manager at Ping Identity
      5.0 ★

      Digital Marketing Review from David Skyberg

      Right from start the Grazitti team gave us the confidence that we do not need to have a plan B. Once things started rolling – they were able to accommodate a number of requirements that were made by the operating teams within the timeframe.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.8 4.8 (5)
    4.3 4.3 (387)

  • Azilen Technologies

    An Enterprise AI Development Company

    Azilen Technologies is a prominent enterprise AI development company that takes pride in delivering exceptional AI, Data, and HRTech solutions to organizations seeking digital transformation...

    Top Services:

    • AI Development
    • Software Development
    • IT Services
    • IoT
    • Cloud Consulting
    • Show more
    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed

    Azilen Technologies Services

    • AI Development
    • Software Development
    • IT Services
    • IoT
    • Cloud Consulting
    • Mobile App Development
    • Wearables
    • Big Data Analytics
    • Managed Services
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GattiHR
    • MoCA
    • Clearingbid
    • Mindmaze
    • Orbiwise
    • Ukheshe
    • Essentialaero
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • The App Founders

    Software, Mobile App, Games Development Company.

    The App Founders is a recognized leader in the mobile app development industry that excels in building mobile apps to upscale your business and bolster your customer retention rate. Well transform your idea into a market-ready application on schedule and within budget...

    Top Services:

    • Mobile App Development
    • Software Development
    • eCommerce Development
    • Product Design
    • CRM Consulting
    • Show more
    Location
    Santa Clara, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed

    The App Founders Services

    • Mobile App Development
    • Software Development
    • eCommerce Development
    • Product Design
    • CRM Consulting
    • ERP Consulting
    • VR/AR
    • Blockchain
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Airhme
    • Bally
    • Rideo
    • Your Wish On
    • Dragon Force Ninja
    • Tamkeen Care
    • Color Jumper
    • Stacker Cracker
    Data sourced from the agency's DesignRush profile

    The App Founders Reviews & Testimonials

    • Dustin Wheeler
      Dustin Wheeler Review from Google
      5.0 ★

      Dustin Wheeler's Review Sourced from Google

      it was such a pleasure working with App Founders and just how easy and professional they were. I quickly realized how the industry is full of thirsty, needy bots and scammers I’m trying to get your attention, but tons of unsolicited phone calls and texts. Dealing with these guys was a breath of fresh and definitely showed up in value above all the rest.

    • Munna Alam
      Munna Alam Review from Google
      5.0 ★

      Munna Alam's Review Sourced from Google

      Got to say, The App Founders really impressed me! They totally nailed the design for my mobile game. Can't wait to team up with them again to make and promote the game. Definitely recommending them to anyone looking for top-notch game development services!

    • berry paul
      berry paul Review from Google
      5.0 ★

      berry paul's Review Sourced from Google

      The App Founders is able to develop console games and deliver them on time. I have worked with them for a year now and they have never missed a deadline, which is important to me as a developer. The team is friendly, knowledgeable and always willing to help if you need anything.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.1 4.1 (9)

  • MLTech Soft

    Trusted Software Partner For Global Businesses

    Enterprise Software Development and Maintenance Services Provider...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • IT Services
    • Show more
    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    10 Projects Listed

    MLTech Soft Services

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • IT Services
    • Cloud Consulting
    • Big Data Analytics
    • DevOps Consulting
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PSA Marine
    • Unilever
    • LOF International
    • Yen Viet JSC
    • Lothamilk
    • Smile For Success Dental Center
    • DCSE Lab
    • InApps
    • Oxi House
    • Pham Lam JSC
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (8)

  • MSP Mobility Corp.

    Driven Companies Towards Their Digital Transformation

    We are a company specialized in software development for mobile platforms, portals and electronic commerce since 1991...

    Top Services:

    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Software Development
    • Mobile App Development
    • Show more
    Location
    Concord, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $24/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    MSP Mobility Corp. Services

    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Software Development
    • Mobile App Development
    • SEO
    • Staff Augmentation
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Honeywell
    • Pfizer
    • Black&Decker
    • Novartis
    • IBM
    • Bimbo
    • Kraft Foods
    • Mars
    • Capistrano
    • Pepsico
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Sunvera Software

    We Build Next-Generation Applications for Small and Mid-Sized Companies.

    Sunvera Software builds innovative and intelligent chatbot solution, mobile, and web applications to help small and mid-sized companies improve operational efficiency and customer satisfaction while reducing company costs...

    Top Services:

    • Web Design
    • Software Development
    • AI Development
    • Mobile App Development
    • IT Services
    • Show more
    Location
    Orange County, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000

    Sunvera Software Services

    • Web Design
    • Software Development
    • AI Development
    • Mobile App Development
    • IT Services
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Samsung
    • Dacor
    • Waffle House
    • Simply Organic
    • HUF
    • Altura
    • Packlist Pro
    • HEYKUBE
    • Reach Fitness
    • Frontier Co-Op
    Data sourced from the agency's DesignRush profile

    Sunvera Software Reviews & Testimonials

    • Murali Krishna
      Murali Krishna Review from Google
      5.0 ★

      Murali Krishna's Review Sourced from Google

      I worked with Sunvera Software on the development of a fitness app for a business. Sunvera delivered the app on IOS and Android platforms. Their development teams were easy to deal with. The app had some complex workflows and Sunvera handled it easily. Weekly reviews kept the development pace on track and kept us informed on the progress. My 5-star review reflects my recommendation of Sunvera for anyone else seeking to develop a solution. However, a well thought-out review must also have identified room for improvement. My suggestion for improvement is their software-bug tracking and closure process to keep the customer better informed. There were times where this was lacking during our project. Team members compensated by stepping up and doing the needful.

    • David Garrett
      David Garrett Review from Google
      5.0 ★

      David Garrett's Review Sourced from Google

      Sunvera helped us develop an app for our product, HEYKUBE. They did an outstanding job, managing simultaneous iOS and Android versions, provisioning a backend server, and implementing core development for the app. The app incorporates graphics as well as a custom BTLE stack to communicate with our device. The team is great, and Ram provides steady leadership to make sure projects get done on time. I would highly recommend Sunvera to just get the job done for you.

    • chris georgieff
      chris georgieff Review from Google
      5.0 ★

      chris georgieff's Review Sourced from Google

      The team at Sunvera has been an invaluable partner for our company. Their approach to problem solving, their attention to detail, and ability to meet tight timelines have helped a young company like ours accomplish a great deal in a short amount of time. I highly recommend Sunvera for your next project. - Chris Georgieff, COO TollSense LLC

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (9)

  • badpixel

    Let's Build Tomorrow Together.

    We are a brand and software development agency specializing in building eCommerce, iOS, and feature-rich websites and apps that move your business forward...

    Top Services:

    • Product Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Web Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $185/hr
    Minimal Budget
    $10,000 - $25,000

    badpixel Services

    • Product Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Web Design
    • Social Media Marketing
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Disney
    • Netflix
    • UnRealSports
    • Peek Travel
    • Klassy
    • The Zeplin Speakeasy
    • KRAK
    • Terpli Inc.
    • TrueCraft
    • Blossom
    Data sourced from the agency's DesignRush profile

    badpixel Reviews & Testimonials

    • Jessica Dally
      Jessica Dally Review from Google
      5.0 ★

      Jessica Dally's Review Sourced from Google

      "We loved working with badpixel! We had already started talking with some potential locations and we needed to quickly establish our logo and branding. With the questionnaire that kicked off our discovery, we were able to capture what we were looking for and it was clearly understood as we went into our first review and really liked what we saw. After a few modifications, we had our logo and style guide allowing us to start working on our social presence while the badpixel team continued to work on our Square website setup. Once the site was ready, they walked us through everything and we were able to jump in and take control! Getting a website up just before the holiday season was huge, it lead to our first sales and profit!"

    • Charlie Wellborn
      Charlie Wellborn Review from Google
      5.0 ★

      Charlie Wellborn's Review Sourced from Google

      Badpixel did an excellent job developing our site (shophearton.com). They were responsive, communicated consistently with us and our marketing team, and met our aggressive deadline. Thanks Sheila & Chris!

    • Joemoney 42
      Joemoney 42 Review from Google
      5.0 ★

      Joemoney 42's Review Sourced from Google

      Working with Chris has been so easy and we could not be happier with the branding for our business! Always very personable and responsive to our input. No need to look elsewhere for great branding! Thanks!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (12)

  • Teamvoy

    We Bring The Tech. You Get The Wins.

    Teamvoy is an AI engineering and transformation partner. We help companies make smarter technology decisions and turn them into production-ready software...

    Top Services:

    • Software Development
    • AI Development
    • Design Services
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Covina, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000

    Teamvoy Services

    • Software Development
    • AI Development
    • Design Services
    • Web Design
    • UI/UX Design
    • Web Development
    • WordPress Website Design
    • IT Services
    • Mobile App Development
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Nasdaq
    • Panasonic
    • Swisscom
    • Afriland First Bank
    • OSL
    • Velory
    • Neopenda
    • Mitipi
    • Garrison Flood Control
    • Market Access Direct
    Data sourced from the agency's DesignRush profile

    Teamvoy Reviews & Testimonials

    • Саша Кравченко (sashko)
      Саша Кравченко (sashko) Review from Google
      5.0 ★

      Саша Кравченко (sashko)'s Review Sourced from Google

      it feels like you're working in an expensive boutique company with the most cutting-edge projects and leading industry experts

    • Альона Какора
      Альона Какора Review from Google
      5.0 ★

      Альона Какора's Review Sourced from Google

      Teamvoy is a professional company with strong expertise and a team of specialists who truly know their field. The atmosphere within the company is comfortable, open, and friendly, which makes working here enjoyable and productive.

    • Qui Cung
      Qui Cung Review from Google
      5.0 ★

      Qui Cung's Review Sourced from Google

      As a swiss company, we collaborated with teamvoy for the development of our website and application. We are very satisfied by the work done by their team and how the troubleshooted our issues.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.7 4.7 (29)

  • MobMaxime

    Top Mobile App and Web Development Company in Canada, USA and UK

    We design highly polished iPhone, Android and Web Apps for startups and Enterprise clients...

    Top Services:

    • Mobile App Development
    • Web Development
    • UI/UX Design
    • IoT
    • Digital Marketing
    • Show more
    Location
    Sunnyvale, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed

    MobMaxime Services

    • Mobile App Development
    • Web Development
    • UI/UX Design
    • IoT
    • Digital Marketing
    • Software Development
    • Web Design
    • eCommerce Development
    • SEO
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Bacsoft
    • Ziptask
    • Clementine
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

Related Services in California

Related Mobile App Development Specializations in California

Popular Services

Latest Trends Related to HTML5 Mobile App Development

iPhone vs Android Statistics
App Development

iPhone vs. Android: 60+ Key Market Statistics Every Business Should Know

20,358
Mobile App Development AI Tools
App Development

I Tested the Top 5 Mobile App Development AI Tools: Here’s What Stood Out

38,799
No-Code App Builders
App Development

Top 5 No-Code App Builders Reviewed — Which One Came Out on Top?

26,964

Receive Free Proposals

For your project

1

Specify your budget, timeline and project requirements

2

Our experts curate a list of up to 5 most qualified candidate agencies

3

We connect you with them so you can choose the most suitable partner

Specify your requirements